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level: Level 1

Questions and Answers List

level questions: Level 1

Question	Answer
in C4 plants,the first carbon dioxide acceptor is	phosphoenol pryvate
in photosynthesis, splitting of water and release of oxygen occurs during	photolysis
hill reaction occurs in	high altitude plants
which one of the following categories of orgnisms do not evolve oxygen uring photosynthesis	photosynthetic blue green algae
what is PAR range	400 nm-700 nm
through the use of oxygen-18 (heavy oxygen), scientists have found that the oxygen released during photosynthesis comes from molecules of	water
in a chloroplast the highest number of protons are found in	lumen of thylakoids
the structures that are formed by stacking of organised flattened membranous sacs in the chloroplasts are	grana
chromoplasts take part in	photosynthesis
the core metal of chloroplasts is	magnesium
suppose an aquatic plant is placed in a test tube containing distilled water and the tube is stopered. the tube is left outdoors for 24 hours and the pH value of water is then measured at regular intervals. which of the following is the most probable result?	the pH value is lowest just before sunrise
chlorophyll in chloroplasts is located in	grana
plants adapted to low light intensity have	larger photosynthetic unit size that the sun plants
which fractions of the visible spectrum of solar radiation are primarily absorbed by carotenoids of the higher plants	violet and blue
at a temperature above 35 degree celcius	rate of photosynthesis will decline earlier than that of respiration
protochlorophyll differs from chlorophyll in lacking	2 hydrogen atoms in one of its pyrrole rings
chlorophyll "a" molecule at its carbon atom 3 pyrrole ring 2 has one of the following	methyl group
most plants are green in colour because	chlorophyll is least effective in absorbing green light
chlorophyll a occurs in	all oxygen liberating autotrophs
photosynthetic pigments found in the chloroplasts occur in	thylakoid membrane
the size of chlorophyll molecule is	head 15*15 A,tail 20 A
emerson's enhancement effect and red drop have been instrumental in the discovery of	two photosystem operating simultaneously
cytochromes are found in	cristae of mitochondria
in photosynthesis the light dependent reactions take place in	stromal matrix
cyclic photophosphorylation results in the formation of	ATP
electrons from excited chlorophyll molecule of photosystem 2 are accepted first by	quinone
the first acceptor of electrons from an excited chlorophyll molecule of photosystem 2 is	quinone
in photosystem 1 the first electronacceptor is	an iron-sulphur protien
photochemical reactions in the chloroplast are directly involved iin	protolysis of water and phosphorylation of ADP and ATP
NADPH is generated through	photosystem 1
pigment acting as a reaction centre during photosynthesis is	P700
photosystem 2 occurs in	grana
ferredoxin is a constituent of	PS 2
a plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilisation. in which of the following physiological groups would you assign this plant	C4
in kranz anatomy, the bundle sheath cells have	thick walls, no intercellular spaces and large number of chloroplasts
C4 plants are more efficient in photosynthesis than C3 because	of lower rate of photorespiration
in leaves of C4 plants malic acid synthesis during CO2 production occurs in	mesophyll cells
the enzyme which fixes CO2 in C4 plants is	PEP carboxylase
thecarbon dioxide acceptor in calvin cycle/C3 plants is	ribulose 1,5-diphosphate (RuBP)
photorespiration is favoured by	high O2 and low CO2
which one of the following is represented by calvin cycle	reductase carboxylation
series of reactions which can convert fatty acids to sugar in plants but not in animals	glyoxylate cycle
the first carbon dioxide acceptor in C4 plants is	phosphoenol pyruvate
dark reactions of photosynthesis occur in	stroma outside photosynthetic lamellae
which technique has helped i investigation of calvin cycle	radioactive isotope technique
during monsson, the rice crop of eastern states of india show lesser yield due to limiting factor of	light
the substrate for photosynthesis is	glycolate
in C4 plants calvin cycle operates in	stroma of bundle sheath chloroplasts
carbon dioxide joins the photosynthetic pathway in	dark reaction
NADP+ is reduced to NADPH in	noncyclic photophosphorylation
the C4 plants are photosynthetically more efficient than C3 plants because	they have more chloroplast
during photorespiration, the oxygen consuming reaction occur in	stroma of chloroplasts and peroxisomes
as compared to a C3-plant , how many additional molecules of ATP are needed for net production of one molecule hexose sugar by C4 plants	twelve
photosynthetically active radiation is represented by a range of wavelength of	400-700 nm
in C3 plants , the first stable product of photosynthesis during the dark reaction is	3-phosphoglyceric acid
in sugarcane plant 14 CO2 is fixed in malic acid , in which the enzyme that fixes CO2	phosphoenol pyruvic acid carboxylase
how man turns of calvin cycle yeild one molecule of glucose	six
in photosynthesis energy from light reaction to dark reaction is transferred in the form of	ATP
glycolate induces opening of stomata in	low CO2 conc.